Abstract: A method of embedding a binary watermark into an image and a computer applied such are disclosed. The binary watermark is transformed to a watermark sequence consisting of K binary numbers and the image is converted into a grayscale image, being segmented into several sections. K sections are selected randomly while each selected section corresponds to one of the binary numbers of the watermark sequence. In relation to each selected section, a sum of a first part of the pixels and a sum of a second part of the pixels is compared. Each of the selected sections having their result of comparison being made to correspond to corresponding binary number in accordance with a predefined correlation results in the binary watermark being embedded into the image.

Abstract: A semantic ambiguity reduction system deconstructs the sentence into a number of basic word units according to predetermined word definitions and semantic logic rules. The semantic ambiguity reduction system acquires the semantic judgments based on the basic word units and the semantic logic rules, stores the semantic judgment if only one semantic judgment of the sentence is acquired, and determines a number of keywords of a semantic ambiguity if more than one semantic judgment is acquired. The semantic ambiguity determines critical information by searching the keywords in the word definitions and the semantic judgments being stored, and selects one semantic judgment from the more than one semantic judgment about the sentence according to the critical information.

Abstract: A method of embedding a binary watermark into an image and a computer applied such are disclosed. The binary watermark is transformed to a watermark sequence consisting of K binary numbers and the image is converted into a grayscale image, being segmented into several sections. K sections are selected randomly while each selected section corresponds to one of the binary numbers of the watermark sequence. In relation to each selected section, a sum of a first part of the pixels and a sum of a second part of the pixels is compared. Each of the selected sections having their result of comparison being made to correspond to corresponding binary number in accordance with a predefined correlation results in the binary watermark being embedded into the image.